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Paraphin [41]
3 years ago
10

Z varies directly with the product of x and y, when x=2,y=0.5, z=4, so the function is z=

Mathematics
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

z = 4xy

Step-by-step explanation:

IF Z varies directly with the product of x and y, then;

Z = kxy

k is the proportionality constant

If x=2,y=0.5, z=4,

4 = k(2)(0.5)

4 = k * 2 * 1/2

4 = k

Swap

k = 4

Substitute into the original expression

z = kxy

z = 4xy

This gives the required expression

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